Power-generating system.



H. LEMP. POWER GENERATING SYSTEM.

APPLIGATION FILED 111119.19, 190s.

Paneted Jan. 19, 1909.

Irwerwtor Hermann Le itnesses:

-HERMAN N LEMP, Ol" LY N,

Un'rrnn srarss rnfrnrvr onirica.

PCWER-GTENERATING SYSTEM.

Specification of Letters Patent.

Patented Jan. 19, 1909.v

Application filed. March 13, 1906. Serial No. 305,900.

To all whom'it may conce/m.'

Beit known that I, HERMANN LEMP, a citizen of the United States, residing at Lynn, county of Essex, State'. orn 'Massachusetts have invented certain new and useful Improve'ments in Power-Generating Systems,

of which the following 1s a speciiication.

My invention relates to steam generating ap aratus particularly applicable to seli-pro- It has for its object to provide an 'improved system of this character which isreliable and efficient in operation.

In carrying the invention into racticc, l

`employ a generator, a burner foriI eating it,

. and, pum s for supplying water and Fuel,

respective r, to the generator and burner. The pumps are driven by a suitable motor through a varia le stroke mechanism oi special design. T is mechanism comprises what I term a hydraulic clutch which is adapted to be automatically controlled by a suitable ageney'to vary the strokes of the pumps in such a manner that the supplies of water and fuel will be changed, and hence the eneration of steam, in accordance with the emand Inv the accompanying drawing, which illustrates one embodiment of the invention, is shown diagrammatically my improved sys? tem adapted for use in automobiles.

Referring to the drawing, 1 represents the waterpump and 2 the fue pump Whichare respectively connected with and supply waterirom the tank 3 to the generator 4, through the supply pipe 5, and fuel from the tank 6 to the burner 7 through the pipe 8. The generator is of a type comprising a coil of pipe and is heated by the burner, which, as shown in the present case, is of the kerosene vapor jeta, type. The pistons of the um s are mechanically connected by a crossiiea 9 vand are driven by a motor 10 through a hydraulic clutch 11; the latter constituting a variable stroke mechanism. The motor comprises an eccentric and its strap 12 which impart motion to the movable element ofthe clutch through the rod 13 artly broken away). The eccentric is usual ymounted on the driving axle of the vehlcle. This is shown in section at A14. The engine 15 for propelling vehicle is geared or otherwise connected with the'shaft so that the latter and hence the eccentric rotates with the same speed as the wheels of the vehicle. This means the speed of the pumps is directly dependent upon the speed ot' the vehicle and correspondingly increases or decreases with the latter.

The hydraulic clutch comprises a driving and a driven element 16 and 17, respectively, preferably in the form o'f plungers, the first being hinged to the eccentrlcrod and the second for the sake of simplicity being a continuation of the plunger of the water pump. The crosshead 9 is rigidly mounted upon this combined lunger. The clutch plungers extend into t 1e casing 18 ofthe clutch from opposite ends thereof and are suitably packed This liquid medium acts as a means for transmitting motion from the driving to the driven plunger, The driving plunger acts in only one direction on the plunger 17 so that the latter is required to be returned by an independent motor, such for instance as one or more extension springs 19, each connected to the crosshead at one end and to the stationary abutment 2() on the clutch casing at the other end. The return stroke of the driven element and the pumps is limited by the adj ustable stops 21 arranged to engage the crosshead. The plunger of the fuel pump is connected to the crosshead through a lostmotion connection which is adjustable so as to obtain the proper ratio between the deliv- 'feries of the pumps. vIn order to vary the tion through the clutch, provision is made for varying the volume of active liquid in the clutch. This is done b means lof a controlled outlet through W 'ch vmore o'r less of the liquid can be displaced during the driving stroke, and the remaining portion serves to transmit motion to the driven member: in other words, when no liquid is permitted to effective and the= stroke 'of the driven element is the same as that "of the driving lelement. As the outlet is opened there 1s a which varies from minimum to maximum as the valves are lmoved from full closed to fuil open position.

Attached to the casing 18 is a column 22 which is branched at its u per end, and comtrolled -byindependent puppet valves 24 and 25. .These valves are each controlled by a be displaced, all of the liquid in the clutch is to prevent waste of the hydraulic medium.

clutch action or effective transmission of moi slip or lost-motion between the elements l ros munication between the ranches 23'zis oonpressure regulator 26 of the diaphragm type,

one being connected to the fue (pump to b e responsive to fuel pressure an the other connected to the steam pipe 27V leading to the engine to be responsive to changes 1n steam ressure. From the branches 23 the liquid displaced throu hthe valves is preferably returned to' the clyutch so as to prevent waste. This may be accom lished in several wa Ys, but by reference the liquidis returned by lWay of t e Water tank 3 and the supply pi e 5, the branches 23y being connected withl t e Water tank through the pipe 28 and the clutch connected with the supply pipe 5 through the pipe 29. In the latter ipe 1s an inwardly opemng check valve 30 w ich ermits the Water to be drawn into the clutc to compensate for the amount that may have been dis laced in the preceding power stroke ang also prevents the Water from being' returned from the clutch to the supply pipe during the power stroke of the driving member. The column 22, pipe 28, Water `tank 3, and ppes' and 29 thus constitute a come zero, the'burner may be sup hed by lthe tank 6 which is preferabl place under a small initial air pressure. n closing down thesystem the supply of fuel is cut 0H by means of the valve 31. In starting up the system the supply of water is obtained by means of a foot pum 32 arranged in the supply pi e 5, but in p ace of this or in connection t erewith, an accumulator may be used as set forth in my prior applications.

The supply of steam to the engine is controlled by a throttle 33. The exhaust steam from the engine may be used to create forced draft on a burner so that as the demand for I steam by engine is increased or diminished the draft is correspondin ly increased or del creased.. To create the orced draft onV the burner the exhaust steam is conveyed by kmeans of the pipe 34 to a preheating chamber 35 which forms the to of the boiler casing 36. The steam Whic is heated in this .chamber discharges into a down draft flue through the openings 38 thereby drawing off the products of Acombustion opemngs 39. or when it is moving and the supply of steam of the engine is c ut off, as when coasting, the

through the l,energy from the actuator When the vehicle is standing,

products of combustion pass off to the atmosphere through the natural draft fiue 40.

The valves of the hydraulic clutch are so set that during normal loadconditions one or both are partially opened; this means that the strokes of the pumps are less than maximum since the clutch 1s not operating at its full capacity. Should the pad on the vehicle increase, for vany reason, the increased demand for steam and the decrease in speed tend to decrease respectively the steam pressure and fuel pressure (the atter being dependent u on the speed of the pump). Under these conditions the clutch valves close to a greater extent so that less liquid from the clutch is displaced and consequently the strokes of the pumps increase t cause the generation of steam to accelerate and the pressure thereof to be maintained substantially constant irres ective of the increase in demand. Should t e load decrease, as in descending a hill or encountering a better stretch of road, the demand for steam is less so that the pressure of the latter tends to increase, as does also the pressure of the fuel due to the increase in speed of the fuel pump. The clutch valves are then openedA to 'a greater extent and more liquid displaced in the clutch so that the strokes of the pumps are shortened and the effective deliveries thereof decreased to meet the different conditions. It will thus be seen that with a system of the character above pro osed the control of the vehicle, so faras t e supply system is considered, is entirely automatic in operation.

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that 'the apparatus shown is only illustrative, and that the invention can be carried out byv other means.

What I claim-as new and desire to secure Y by Letters Patent of the United States, is,-.-

1. A supplysy'stem for vapor generating apparatus, comprlslng a generator, a burner for heating 'the same, means for feeding liquid to the generator and fuel to the burner, an actuator, a connection between the actuator and said means including a lost motion device,` and means controlled by the ressure of the fuel supplied to the burner W ich regulates lthe interruption of the transmission of l to said feeding vmeans by the lost motion device and varies the 'supplies of. both fuel and liquid.'

2. A supply system for vapor generating apparatus, comprising a generator, a burner for heating the same, means for feeding liquid `-t'o the generator and fuel to the burner in suitable proportions, a constantly moving actuator, a connection between the actuator 4the lost motion connection to simultaneously' .the fuel supplied to the burner 't and said means including a lost motion desaid proportionateI relations of the supplies.

3. A supply systemfor vapor generating apparatus,'comprising a generator, a burner for heatinglthe samepa pump for supplying liquid to t e generator, a puin for supplying fuel to the burner in suitab e pro ortion to the liquid supplv, an actuator or the pumps includingA a lost motion connection, anda device controlled by the ressure of the fuel supplied to the burner it' iich regulates vary the effective deliveries of the pumps.

4. A supply system for vaporv generating apparatus, comprising a generator, a burner for heating the same, a pump for supplying liquid to the generator, a pump for supplying fuel to the burner, a motor for driving the pumps, means for transmitting motion from the` motor to the pumps including a1 lost motion connection, and a device subject to the pressure of the fiielsupplied by the fuel pump tor controlling said connection to vary the eHective delivery of the liquid pump.

5. A supply system for vapor generating apparatus, comprising a generator, a burner for heating the saine, a pump for supplying liquid to the generator, a pump for supplying liquid to the burner, a mechanism for driving the pumps n hich comprises a lost motion device for varying the strokes thereof, and means subject to the pressure of the fuel sup plied to the burner for controlling said device to dcereasethe strokes of the pumps as the fuel pressure increases or vice versa.

6. A supply system for vapor generating ap/paratus, comprising a generatorpa bui-npr for heating the same, means for feeding liquid to the generator and fuel to the burner, an actuator for said means including a lost niotion i-iiechaiiism, and a device controlled by the pressure of the fuel supplied to the burner and by the pressure ofthe vapor in the. generatorfor regulating the lost motion mechanisml to vary the supplies of both the fuel and liquid.

7. A supply system for vapor generating apparatus, comprising a generator, a burner for heatingthe same, a pump for supplying liquid to the generator, a pump for supplying fuel to the burner, amotor for driving the pumps, means connecting the motor and the pumps, and a', device Vsubject to the pressure of the fuel supplied by the pump and tothe pressure of the vapor in the generator for controlling said means to vary the effective delivery of the liquid pum 8. .A supply system apparatus, comprising a generator, a burner for vapor generatingfor heating it, means for supplying fuel to the burner, a pump for supplying li uid to the generator, a variable stroke mec ianism for driving the pump, and a regulating device for said mechanism which is controlled by the pressure of the fuel supplied to the burner for regulating the stroke of the liquid pump.

9. A supply system foi vapor generating apparatus, comprising a generator, a burner for heating it, means for supplying fuel to the burner, a pump for supplying liquid to the generator', a variable stroke mechanism for driving the pump, and a regulating device for said mechanism ivhich is controlled by' the pressure of the fuelsupplied to the burner and by the pressure of the vapor iii the generatbr for governing 'the stroke of the pump.

10. A supply system for vapor generating apparatus, comprising a generator, a burner for Aheating it, a fuel tank arranged tosiipply fuel under a definite lov.' ressuije for maintaining the flame in bankcifbondition, a pump connected with the tank for supplying fuel to the burner during normal operation, a pumpy for su i lying liquid to the generator, and a varialblle stroke mechanism for the pumps which is controlled bythe pressure of the fuel supplied to the burner.

11. A supply system for steam generating 'u for governing the said mechanism which is controlled by the pressure of the fuel supplied to the burner.

12. A supply system, comprising a pum an apparatus arranged to receive the li uid discharged by the ump, a driving mem er, and a controllable body of fluid between the movable element of the pump and .the member n hereby the'latter acts through the fluid to impart motion to the said element.

13. A supply system, comprising a puin 3, an apparatus arranged to receive the liquid discharged by the iump, a motor having a constant stroke, va ody of inelastic fluid interposed between the movable element of the pump andthe motor through which the latter imparts motion to the former, and means for varying the effective volume of said fluid body tointroduce lost motion between the element and motor.

'14. A supply system, comprising a pump,

an' apparatus arranged to receive the liquid discharged by the pump, a constant stroke -rnotor, and a hydraulic clutch mechanism istroke driven plunger connected? with the the driven pluncgier in the opposite direction plungers through which one drives the other, and means for varyin the volume of said medium 'so that the e eotive movement of the driven plunger can bevaried.

15. A supply system, comprising .it Pump, an a paratus receiving the liquid dSCl'gQ/d by tfie um a constant stroke motor, and a hydraulic c utch mechanism between the motor and the movable element of the pump, which is composed of a plunger 0011- nected with the motor, a second pluu er connected with the pump, a casingffor tie said plungers, a mobile medium between the plungers through which one drives the other, and means for varying the volume of said medium controlled by the pressure of the fluid delivered by lthe pump to Vary the effective movement of the drlven plunger,

16. A supply system, comprising a pump, an apparatus receiving the liquid discharged by the pump, a motor, and a hydraulic clutch mechanism bgtysreen the pump and motor which is compose'r'ff a driviug'and u drivenplunger, a ncasing for both, a body of fluid in the casingl interposed between the plungers, and .a valve controlled conduit. through which a variable amount of fluid discharges from the casing during one stroke off the driving plunger and returns during the other stroke for varyin the effective transmission of motion throug the clutch.

17. A su pply system, comprising a pump an a paratus receiving the liquid discharged by t e pump, a motor, and a clutch mechanism between the motor and pump which is composed of a constant stroke driving plunger connected with the motor, a variable stroke driven plunger connected with the pum a casing for the plungers, a body of v40 i qui between the plungers through which the driving plunger imparts motion to the other in one direction, and means for moving the driven plunger in the opposite direction.

18. A supply system, comprisin a pump, an apparatus receiving the liquid c ischarged by t e pump, a motor, and a clutch mechanism between thie motor and pump which is composed of a constant stroke driving plun- 'ger connected with the motor, a variable Bump, a casing for the plungers, 'a body of 'quid between the plungers through which the driving plunger imparts motion to the other in one direction, means for moving and a controlle conduit connected with the y casing through which fluid is displaced during the power. stroke-of the drivmg plunger and returned during the return stroke of said plunger.

-19. A supply system, comprisin a ump, an a paratus receiving the liquid liscliarged by t e pump, a 1i uid containing tank, a supply connection `etween the .tankaa'nd motor which is composed of a driving and a driven plunger, a casing for the plungers, a body of liquid interposed between the plungers, a conduit between the casing and tank, and a valve regulated by the pressure of the fluid delivered by the pump for controllin the discharge of liquid from the casing an varying' the effective transmission of motion from the driving to the driven plunger.

-..Z0.- A supply system, comprlsing a ump, an a paratus receivingthe liquid disc arged by t e ump, a motor, a hydraulic clutch mechanism between them which is composed of a driving and a driven member, a casing for both, a body of fluid in the casing interposed between the members, a conduit through which fluid may bn dis laced from between the members to vary t e eective strokes thereof, and a plurality of automatically controlled regulators in said conduit.

21. A supply system, comprisin a pump, an aplparatus receiving the liquid ischarged by.t e pump, a motor, a hydraulic clutch mechanlsm between them which is composed of a driving and a driven member, a casing for both, a body of fluid in the casing interposed between the members, a conduit through which fluid may be dis laced from between the members to vary t e eHective strokes thereof, a plurality of valves .for independently controlling the amount of Huid displaced, actuators means for supplying fluid to the casing to replenish the amount displaced.

22. A supply system, comprising a pump, an a paratus receiving the iquid dellvered by t e pum a source of supply therefor, a motor for driving the pump, a hydraulic clutch between the posed of a plunger riven by the motor, a second plunger driven by the first, a casing for the plungers, a body of li uid in the casing interposed between the p un ers, a conduit through which liquid from t e casing is displaced` to vary the effective strokes of the plungers, a plurality of independently actuated' valves in the conduit throu h which liquid asses from thev casing, regu ators for the va ves, and a conduit common to all the valves which receives the fiuid discharged therefrom and conveys it to said source of supply.

supply system, com rising a pump,

van a paratus receiving the iquid delivered by t e ump, =a`source of supply therefor, a motor or rivin the pump, a hydraulic or the valves, and

ump and motor comclutch between t e ump and motor com:v

posed of a" plunger riven by the motor, a second plunger riven b y the first, a casing for the plungers, a body of li uid in the casing interposed between the p un ers, a conduit through which liquid from t e casing is displaced to `vary the edective strokes of the plungers, a plurality of independently actuated Valves in the conduit throu h which liquid asses from the casing, regu ators for the ya Ves, a conduit common to all the valves which receives the fluid discharged therefrom and conveys it to said'source of supply, and a connection between the said source and the casing through which .liquid iiows to the latter to replenish the amount 1n displaced therefrom.

24. A supply system, comprising a plurality of pumps, a motor therefor, ahydraulic vclutch between the pumps and motor whereby the strokes of the pumps may be varied 15 with respect to the strokes of the motor, and

a plurality of regulators for the clutch which are each connected with an independent pump to be controlled by the pressure of the delivery thereof.

of a pump, an a paratus receivingthe liquid discharged by t e pump, a source of li uid supply, a motor for the pump, and a y- 'ino erative.

25. In a supply system, the combination' draulc clutch between the pump and motor whereby thestroke'sof the pump may be varied, the clutch and said source being so related that when th'e supply from the source to the pump interruptedhe clutch becomes inoperative.

26. In a supply system, the combination of a generator, a burner for heating it, pumps Y n witness whereof, I have hereunto set `my hand this tenth day of March, 1906.

HERMANN LEMP Witnesses.:

JOHN A. McMANUs, Jr., HENRY OJWESTENDARP. 

